Discuss and demonstrate mathematically the ratio of RB to RC for the BJT circuit to work as an inverter. Assume VBE(sat) = 0.7V, VCE(sat) = 0.2V, Vcc = 5V Find an expression for Rc >= ... Pick a transistor from the simulator's list with a suitable HFE. Find 3 sets of values of RB and Rc for which the circuit acts as an inverter. The chosen RB resistor values should be (x5, x50); for example: RB = 250, 1.25K, 12.5K ohm Compare the switching characteristics and noise margins (simplified method, assume no load).